SNOWBALL EARTH anime announced its opening theme song to be “Zero” by tuki ahead of the anime’s April 2026 release date. Studio KAI (Sentenced to Be a Hero) is in charge of the animation, with Munehisa Sakai as the director.
You can hear a preview of the theme song in the teaser below:
The voice cast for the anime includes:
- Takuto Yoshinaga as Tetsuo Yabusame
- Daisuke Hirakawa as Yukio
- Ami Koshimizu as Ao Nogi
- Konomi Tamura as Hagane Takimura
You can watch the trailer for the anime below.
Yuhiro Tsujitsugu writes and draws the Snowball Earth manga series, which has been serialized in Shogakukan’s Monthly Big Comic Spirits seinen manga magazine since January 2021. As of December 25, 2025, a total of ten volumes has been released. The manga previously received praise from numerous renowned creators, including Hideaki Anno (Neon Genesis Evangelion), Hideo Kojima (Metal Gear Solid, Death Stranding), and ONE (One-Punch Man, Mob Psycho 100).
VIZ Media licensed it in English, describing the story of the first volume:
Yukio was destroyed in battle and Tetsuo survived in an escape pod. After eight years in cold sleep, the escape pod finally lands back on Earth. But when Tetsuo emerges he finds a world in ruins, entirely frozen beneath a blanket of ice and snow—snowball Earth! What happened to humanity, how did the planet freeze over, and will Tetsuo be able to keep his last promise to Yukio?
Source: Snowball Earth Official Website
©Yuhiro Tsujitsugu / Shogakukan / Snowball Earth Production Committee
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